Alencar, A., Alcemar, R., Schmitz, E., Correa, A., & Dias, A. (2011). The Impact of Non-Essential Software Units and Flexible Precedence Relationships on the Value of Software Projects. In Proceedings of the 7th Brazilian Symposium on Information Systems, (pp. 298-309). Porto Alegre: SBC. doi:10.5753/sbsi.2011.14585